Method of making eyeglass parts
United States Patent 1825427
Inventors:
Siddall, Wilbur H.
Publication Date:
09/29/1931
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Assignee:
BAY STATE OPTICAL COMPANY
Primary Class:
Other Classes:
351/177, 264/274, 29/DIG.035, 156/303.100, 29/432
International Classes:
G02C5/00; G02C5/18; G02C5/14